Loco motive-furnace



(No Model.)

T. A. BUG'KLAND.,

- LOGOMOTIVE FURNACE.

Patented Jan. 31,1882.

fnven a1/"r Momes QZMMQ No. 252,862.v

the interior ofthe furnacel and Fie'. 2

UNITED STATES PATENT OFFICE.

THOMAS A. BUOKLAND, OF ST. LOUIS, MISSOURI.

LOCOlViOTlVE-FURNACE.

SPECIFICATION forming part of Letters Patent No. 252,862, dated January 31, 1882. Application filed May 25, 1881-. (No model.)

To all 107mm it may concern:

Be it known that I, Tnonas A. BUGKLAND, ot' St. Louis, Missouri, ha\e made a new and useful Improvement in Locomotire-Furnaces, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making a part of this speeltication, in which- Figure 1 is a View in perspective of the furnace of a locomotive having the improvement, the furnace-wall being broken away to exhibit a vertical longitudinal section taken through the furnace.

The same letters denote the same paris.

The present invention relates to the dia phragm-its construction, arrangement, and operationat the farther end of the furnacechamber.

'A represents a locomotive-furuace having theimprovement, and, savingwhich, being of the usual construction, B being the inner wall of the furnace, O the furnace-door, I) the grate, and E the boiler-nues.

F represents a diaphragm made of suitable material for withstanding the heat, and extending from or from near the upper farther cornerof the furnacedownward and toward the, furnace-door, its lower end coming in practice a short distance above the fuel as ordinarily laid in a locomotive-furnace. The diaphragm also extends transversely across, orwell across, the furnace. It is preferably made in two or more sections, fff, tofaciiitate its being introduced into the furnace, and when thus made the various sections are spaced slightlyr apart to prevent them from fusing together, which is .apt to occur when the diaphragm is made of tire-clay (as is generally the case) and when the sections are in Contact.

The sections j'ff or diaphragm F is supported in the position shown by any suitable means,bnt sothatit can be removed or turned up, as indicated by the dotted lines in Fig. 2, to enable the boiler tlues to be reached for cleaning or repair. The mode I have adopted is to hang the Lipper end of the diaphragm against and upon a water-tube, G, and to rest its lower end against another water-tube, H, and for this purpose the diaphragm is made hookshaped at its upper end, and its lower end is preferably provided with a shonlder,f, shaped and arranged to tit the tube H. To reach the tlues E the diaphragm is cleared of the lower tube, H, and turned upward upon the upper tube, G, as upon a bearing. Either section f may be raised separately.

The diaphragm is preferably perforated at f2 to allow the air to pass through the diaphragm, as indicated by the arrows. The air becomes heated by reason of the heat accumulated in the diaphragm, and enables the fuel to be consumed more perfectly beyond the diaphragm.

Side tiles, I I, and end tiling, J, (both of which are perforated to admit the outer air, as shown in constructions previously patented by me,) are preferably used in combination with the diaphragm F, forming with the latter a throat, K, in which the fuel can be very thoroughly consumed. The tiling I J is preferably supported upon plugs L, which are screwed into the inner wall, B, of the furnace, and which are made hollow to provide for the circulation of water therein from the water-space surrounding the furnace.

The diaphragm F compels the products of combustion to pass beneath` its lower end into thc throat K, where they are heated and more thoroughly burned before reaching the boilernues. Atthe same time the diaphragm can be easily moved, when desired, to provide access to the boiler-dues. So far as Iswinging the diaphragm upon a bearing is concerned, it is immaterial, for the purpose of reaching the lines, whether the diaphragm, when at rest, is inclined from 1thelupper forward end ort-he upper rea-r end of the furnace, or whether it hangs vertically.

I claim- A 1.. The combination ofthe furnaceA,hooked and adjustable diaphragm F, support Gr, and support H, substantially as described.

2. The combination of the furnace A, the sections fff, spaced apart, as described, and forming a removable diaphragm, having a shoulder, f', and the water-tubesl H, substantially as described.

3. The combination of the diaphragm F, constructed, arranged, and extended as described, andthe tiling lIand J, substantially IOO 

